THERMAL DECOMPOSITION OF CYCLOLINEAR AND CYCLIC METHYLSILOXANE POLYMERS.

M. Blazso, T. Szekely, N. M. Makarova

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Abstract

A series of branched-chain methylsiloxane polymers built up of four-membered siloxane cycles and linear segmets of zero to four siloxy units, and another series consisting only of siloxane cycles of five to eight members were investigated. The samples were pyrolyzed at temperatures increased stepwise from 300 to 800 degree C. The pyrolysate was analyzed online by gas chromatography and mass spectrometry. In the pyrolysates, series of cyclic, bicyclic, and polycyclic methylsiloxane compounds were found. Quantitative gas chromatographic analysis of the pyrolysates shows that their composition reflects the composition and structure of the pyrolyzed polymethylsiloxane.

Original languageEnglish
Pages (from-to)2589-2599
Number of pages11
JournalJournal of polymer science. Part A-1, Polymer chemistry
Volume23
Issue number10
Publication statusPublished - Oct 1 1985

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ASJC Scopus subject areas

  • Engineering(all)

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